By using a particular apparatus with ability to change specimen surround Pressure, natural convection calculated by existent equations. Pressure varied from 18 to 220000 Pascal and convection coefficient was calculated in the temperature range from 40 to 100 C. Each test has been done in repeatedly...
关键词: cooling heat conduction natural convection packaging FR-4 plate aspect ratio conducting board discrete source heat transfer coefficient horizontal enclosure 会议名称: IEEE Semiconductor Thermal Measurement & Management Symposium 会议时间: 1998/03/01 主办单位: IEEE ...
he measured convective heat transfer coefficient was between 6.2 and 7.6 W/m2C, with an average of 7.0 W/m2C. 展开 关键词: convective heat transfer coefficient natural convection Roman baths DOI: 10.1139/tcsme-2012-0029 被引量: 7 年份: 2012 ...
linear expansion coefficientquenchthermal shockthermal stressesyoung's modulusA numerical benchmark study dealing with 3-D natural convection in an air-filled cavity oriented at three different angles was held at the International Center for Heat and Mass Transfer (ICHMT) 2nd International Symposium on...
The study considers the effect of varying inlet air temperatures on key performance parameters such as charging/discharging times, exit air temperatures, coefficient of performance, and power savings. A fully transient 2D mathematical model, solved computationally by ANSYS software and validated ...
Natural convection is captured using Boussinesq approximation. Heat and moisture transfers in porous material and air channels are computed separately, using two-domain approach. The interaction between the two domains is taken into account using constant heat and vapour surface film coefficients along ...
Small-capacity furnaces that rely on natural convection for heat distribution can be classified as local and can usually effectively condition a single space only. However, furnaces equipped with fans to circulate air over greater distances or to several rooms are used for residential and small ...
However, it is impossible to acquire these coefficient measurements in practice and solving inverse problems with hidden physics is prohibitively expensive due to high uncertainty in simulation formulas17. Similar to the simulation by hidden fluid mechanics18, we achieved a high quantitative agreement ...
lnMW and lnRA demonstrated negative impact on air pollution at the 1% and 5% significance level, respectively; their spatial lagged term showed negative coefficient but failed the significance test. lnTR, and lnTEM all failed significance tests, which meant these variables have no significant local...
The distribution of the heat transfer coefficient along the wall depends on the air flow pattern in the room. Krajčík et al. [86] visualized the non-uniformity of the distribution of hi,t along heating or cooling wall surface in a room at natural convection with no or uniformly distribute...